OXFORD — Monday was the final deadline for underclassmen to declare for the 2019 NFL Draft, giving us a little more clarity of what college football rosters across Mississippi will look like in the fall.

Sure, players still have time to transfer, especially if they graduate in the spring. But, for the most part, we're starting to get a clear picture of where teams across the state are going to be strongest and weakest heading into spring practice and, eventually, the 2019 season.

Ole Miss leads the state with four players declaring early for the 2019 NFL Draft, as wide receivers AJ Brown and DK Metcalf, tight end Dawson Knox and offensive tackle Greg Little will all be moving on to the next level. Mississippi State has one early declaration in defensive tackle and 2018 Conerly Award winner Jeffery Simmons. Neither Southern Miss nor Jackson State have an early declaree for the 2019 NFL Draft, but both schools will feel the absence of graduating seniors on their rosters next season.

Let's take a dive into what each of the state's biggest football schools will return in 2019, statistically speaking. Across 16 major statistical categories, the Clarion-Ledger has broken down what percentage of production Ole Miss, Mississippi State, Southern Miss and Jackson State will return in the fall. For example, if a team scored 40 touchdowns in 2018, but 20 of them were scored by graduating seniors, we'd stylize that return value as "20 (50 percent)." If the same team made 1,000 tackles but 600 of them were made by players who won't be returning in 2019, we'd stylize that as "400 (40 percent)."

What Ole Miss returns in 2019

For Ole Miss, the question heading into 2019 is about what's more concerning: losing a good offense or returning a bad defense?

With quarterback Jordan Ta'amu, receivers Brown, Metcalf and DaMarkus Lodge, tight end Knox and offensive linemen Little, Sean Rawlings and Javon Patterson all either leaving for the NFL Draft or graduating, the Rebels are going to have to reinvent themselves as an offense under new coordinator Rich Rodriguez.

But on defense? Ole Miss is returning most of its starters and production from a year ago. The only problem is that production wasn't very good, with Ole Miss ranking last among SEC schools in scoring defense, total defense, run defense and sacks.

Here's a look at what Ole Miss returns statistically for 2019:

Passing Attempts: 22 (5 percent)

Passing Completions: 16 (5.7 percent)

Passing Yards: 239 (5.7 percent)

Passing TDs: 2 (9.5 percent)

Rush Attempts: 303 (72.3 percent)

Rush Yards: 1627 (82.6 percent)

Rush TDs: 18 (75 percent)

Receptions: 84 (29.8 percent)

Receiving Yards: 1028 (24.7 percent)

Receiving TDs: 6 (28.6 percent)

Tackles: 748 (76.6 percent)

Tackles for loss: 67.5 (78.5 percent)

Sacks: 16 (72.7 percent

Interceptions: 2 (28.6 percent)

Forced fumbles: 11 (84.6 percent)

Pass breakups: 35 (79.5 percent)

What Mississippi State returns in 2019

Year 2 of the Joe Moorhead era in Starkville is going to be a fascinating one in terms of look. The Bulldogs are going to be moving on from the Nick Fitzgerald era at quarterback, meaning the team is going to have to replace most of its passing and rushing production after Fitzgerald accounted for 55.9 percent of Mississippi State's total offense in 2018.

But the Bulldogs will also have to replace the production of senior running back Aeris Williams, as well as a host of talented defenders including Simmons, defensive end Montez Sweat and defensive backs Johnathan Abram, Mark McLaurin and Jamal Peters.

Here's a look at what Mississippi State is returning statistically in 2019:

Passing Attempts: 42 (13 percent)

Passing Completions: 20 (12.1 percent)

Passing Yards: 492 (21.8 percent)

Passing TDs: 6 (27.3 percent)

Rush Attempts: 189 (36.8 percent)

Rush Yards: 1180 (40.6 percent)

Rush TDs: 9 (34.6 percent)

Receptions: 130 (78.8 percent)

Receiving Yards: 1831 (81.1 percent)

Receiving TDs: 19 (86.4 percent)

Tackles: 446 (50.7 percent)

Tackles for loss: 52 (50.5 percent)

Sacks: 18 (46.2 percent)

Interceptions: 10 (76.9 percent)

Forced fumbles: 1 (14.3 percent)

Pass breakups: 22 (48.9 percent)

What Southern Miss returns in 2019

Coming off a 6-5 season with no postseason reward in 2018, Southern Miss will enter 2019 with plenty of motivation. And luckily for the Golden Eagles, most of the team's production will return across the board, from quarterback Jack Abraham to running backs Trivenskey Mosley and Steven Anderson to wide receivers Jaylond Adams and Quez Watkins to a defensive core including safety Ky'el Hemby, linebackers Racheem Boothe and Paxton Schrimsher and defensive lineman Jacques Turner.

Sure, Southern Miss loses experience on defense with veterans like Picasso Nelson Jr., Sherrod Ruff and Jeremy Sangster graduating. But the Golden Eagles should look pretty similar in 2019 to the way they did in 2018, just with more experience and time together as a unit to grow.

Here's a look at what production Southern Miss gets back in 2019:

Passing Attempts: 387 (99.5 percent)

Passing Completions: 268 (99.6 percent)

Passing Yards: 2806 (100 percent)

Passing TDs: 19 (100 percent)

Rush Attempts: 338 (84.7 percent)

Rush Yards: 1063 (85.8 percent)

Rush TDs: 11 (100 percent)

Receptions: 248 (92.2 percent)

Receiving Yards: 2522 (89.9 percent)

Receiving TDs: 18 (94.7 percent)

Tackles: 361 (59.6 percent)

Tackles for loss: 41 (56.9 percent)

Sacks: 13.5 (58.7 percent)

Interceptions: 13 (92.9 percent)

Forced fumbles: 4 (44.4 percent)

Pass breakups: 26 (89.7 percent)

What Jackson State returns in 2019

New Jackson State coach John Hendrick is going to have a deep roster of returning options when he takes the field for the first time in the fall. In all but one of 16 of the categories we're examining, Jackson State is returning at least 50 percent of its production, including a mark better than 80 percent in eight of the areas.

Coming off a .500 season a year ago, Jackson State will have to reinvent itself a little bit under the new regime, but with plenty of players returning, the roster might have the experience to get things done.